Cahokia Creek near confluence with the Mississippi River (Agency code: CA00.4M)

Descriptive Statistics of Concentration Data (Milligrams/Liter) 

                  TN_N     NOx_N     NHx_N      TP_P     SRP_P       TSS        Cl   SiO2_Si
Total obs. =       101       107       108        94       106       106       105       105
Start date =  05/05/93  05/05/93  05/05/93  05/05/93  05/05/93  05/05/93  05/05/93  05/05/93
End date   =  04/23/98  04/23/98  04/23/98  04/23/98  04/23/98  04/23/98  04/23/98  04/23/98
Mx smp int days=    93        78        78       139        78        78        78        78
Mean samp int=    18.1      17.1      17.0      19.5      17.3      17.3      17.4      17.4
Stdv samp int=    11.7       9.6       9.5      17.2      10.1      10.1      10.2      10.2
Mean conc. =      2.14      0.98     0.135     0.260     0.049      97.2      29.6      3.96
Stdev conc.=      1.10      0.89     0.162     0.315     0.062     259.7      16.4      1.37
Min conc.  =      0.66      0.01     0.001     0.058     0.001       5.7       6.0      0.72
25% conc.  =      1.43      0.17     0.043     0.130     0.008      23.5      20.3      3.10
Med. conc. =      1.83      0.81     0.097     0.173     0.028      35.1      25.7      4.01
75% conc.  =      2.74      1.53     0.167     0.257     0.071      66.6      35.6      4.78
Max conc.  =      6.57      3.89     1.131     2.380     0.389      2316      99.1      7.21

Flow summaries are in the LOADEST2 diagnostic information

TN_N    = Total Nitrogen (as N)
NOx_N   = Total Nitrate + Nitrite (as N)
NHx_N   = Dissolved Ammonia (as N)
TP_P    = Total Phosphorus (as P)
SRP_P   = Soluble Reactive Phosphorus (as P)
TSS     = Total Suspended Solids
Cl      = Dissolved Chloride (as Cl)
SiO2_Si = Dissolved Silicon (as Si)